?? driver.cpp
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/************************************************************************
* 文件名稱:Driver.cpp
* 作 者:張帆
* 完成日期:2007-11-1
*************************************************************************/
#include "Driver.h"
#pragma INITCODE
VOID StringInitTest()
{
//(1)用RtlInitAnsiString初始化字符串
ANSI_STRING AnsiString1;
CHAR * string1= "hello";
//初始化ANSI_STRING字符串
RtlInitAnsiString(&AnsiString1,string1);
KdPrint(("AnsiString1:%Z\n",&AnsiString1));//打印hello
string1[0]='H';
string1[1]='E';
string1[2]='L';
string1[3]='L';
string1[4]='O';
//改變string1，AnsiString1同樣會導致變化
KdPrint(("AnsiString1:%Z\n",&AnsiString1));//打印HELLO
//(2)程序員自己初始化字符串
#define BUFFER_SIZE 1024
UNICODE_STRING UnicodeString1 = {0};
//設置緩沖區(qū)大小
UnicodeString1.MaximumLength = BUFFER_SIZE;
//分配內存
UnicodeString1.Buffer = (PWSTR)ExAllocatePool(PagedPool,BUFFER_SIZE);
WCHAR* wideString = L"hello";
//設置字符長度,因為是寬字符，所以是字符長度的2倍
UnicodeString1.Length = 2*wcslen(wideString);
//保證緩沖區(qū)足夠大，否則程序終止
ASSERT(UnicodeString1.MaximumLength>=UnicodeString1.Length);
//內存拷貝，
RtlCopyMemory(UnicodeString1.Buffer,wideString,UnicodeString1.Length);
//設置字符長度
UnicodeString1.Length = 2*wcslen(wideString);
KdPrint(("UnicodeString:%wZ\n",&UnicodeString1));
//清理內存
ExFreePool(UnicodeString1.Buffer);
UnicodeString1.Buffer = NULL;
UnicodeString1.Length = UnicodeString1.MaximumLength = 0;
}
#pragma INITCODE
VOID StringCopyTest()
{
//初始化UnicodeString1
UNICODE_STRING UnicodeString1;
RtlInitUnicodeString(&UnicodeString1,L"Hello World");
//初始化UnicodeString2
UNICODE_STRING UnicodeString2={0};
UnicodeString2.Buffer = (PWSTR)ExAllocatePool(PagedPool,BUFFER_SIZE);
UnicodeString2.MaximumLength = BUFFER_SIZE;
//將初始化UnicodeString2拷貝到UnicodeString1
RtlCopyUnicodeString(&UnicodeString2,&UnicodeString1);
//分別顯示UnicodeString1和UnicodeString2
KdPrint(("UnicodeString1:%wZ\n",&UnicodeString1));
KdPrint(("UnicodeString2:%wZ\n",&UnicodeString2));
//銷毀UnicodeString2
//注意!!UnicodeString1不用銷毀
RtlFreeUnicodeString(&UnicodeString2);
}
#pragma INITCODE
VOID StringCompareTest()
{
//初始化UnicodeString1
UNICODE_STRING UnicodeString1;
RtlInitUnicodeString(&UnicodeString1,L"Hello World");
//初始化UnicodeString2
UNICODE_STRING UnicodeString2;
RtlInitUnicodeString(&UnicodeString1,L"Hello");
if (RtlEqualUnicodeString(&UnicodeString1,&UnicodeString2,TRUE))
{
KdPrint(("UnicodeString1 and UnicodeString2 are equal\n"));
}else
{
KdPrint(("UnicodeString1 and UnicodeString2 are NOT equal\n"));
}
}
#pragma INITCODE
VOID StringToUpperTest()
{
//初始化UnicodeString1
UNICODE_STRING UnicodeString1;
RtlInitUnicodeString(&UnicodeString1,L"Hello World");
//變化前
KdPrint(("UnicodeString1:%wZ\n",&UnicodeString1));
//變大寫
RtlUpcaseUnicodeString(&UnicodeString1,&UnicodeString1,FALSE);
//變化后
KdPrint(("UnicodeString1:%wZ\n",&UnicodeString1));
}
#pragma INITCODE
VOID StringToIntegerTest()
{
//(1)字符串轉換成數(shù)字
//初始化UnicodeString1
UNICODE_STRING UnicodeString1;
RtlInitUnicodeString(&UnicodeString1,L"-100");
ULONG lNumber;
NTSTATUS nStatus = RtlUnicodeStringToInteger(&UnicodeString1,10,&lNumber);
if ( NT_SUCCESS(nStatus))
{
KdPrint(("Conver to integer succussfully!\n"));
KdPrint(("Result:%d\n",lNumber));
}else
{
KdPrint(("Conver to integer unsuccessfully!\n"));
}
//(2)數(shù)字轉換成字符串
//初始化UnicodeString2
UNICODE_STRING UnicodeString2={0};
UnicodeString2.Buffer = (PWSTR)ExAllocatePool(PagedPool,BUFFER_SIZE);
UnicodeString2.MaximumLength = BUFFER_SIZE;
nStatus = RtlIntegerToUnicodeString(200,10,&UnicodeString2);
if ( NT_SUCCESS(nStatus))
{
KdPrint(("Conver to string succussfully!\n"));
KdPrint(("Result:%wZ\n",&UnicodeString2));
}else
{
KdPrint(("Conver to string unsuccessfully!\n"));
}
//銷毀UnicodeString2
//注意!!UnicodeString1不用銷毀
RtlFreeUnicodeString(&UnicodeString2);
}
#pragma INITCODE
VOID StringConverTest()
{
//(1)將UNICODE_STRING字符串轉換成ANSI_STRING字符串
//初始化UnicodeString1
UNICODE_STRING UnicodeString1;
RtlInitUnicodeString(&UnicodeString1,L"Hello World");
ANSI_STRING AnsiString1;
NTSTATUS nStatus = RtlUnicodeStringToAnsiString(&AnsiString1,&UnicodeString1,TRUE);
if ( NT_SUCCESS(nStatus))
{
KdPrint(("Conver succussfully!\n"));
KdPrint(("Result:%Z\n",&AnsiString1));
}else
{
KdPrint(("Conver unsuccessfully!\n"));
}
//銷毀AnsiString1
RtlFreeAnsiString(&AnsiString1);
//(2)將ANSI_STRING字符串轉換成UNICODE_STRING字符串
//初始化AnsiString2
ANSI_STRING AnsiString2;
RtlInitString(&AnsiString2,"Hello World");
UNICODE_STRING UnicodeString2;
nStatus = RtlAnsiStringToUnicodeString(&UnicodeString2,&AnsiString2,TRUE);
if ( NT_SUCCESS(nStatus))
{
KdPrint(("Conver succussfully!\n"));
KdPrint(("Result:%wZ\n",&UnicodeString2));
}else
{
KdPrint(("Conver unsuccessfully!\n"));
}
//銷毀UnicodeString2
RtlFreeUnicodeString(&UnicodeString2);
}
VOID StringTest()
{
//字符串初始化實驗
// StringInitTest();
//字符串拷貝實驗
// StringCopyTest();
//字符串比較實驗
// StringCompareTest();
//字符串變大寫實驗
// StringToUpperTest();
//字符串與整型相互轉化實驗
// StringToIntegerTest();
//ANSI_STRING字符串與UNICODE_STRING字符串相互轉換實驗
StringConverTest();
}
/************************************************************************
* 函數(shù)名稱:DriverEntry
* 功能描述:初始化驅動程序，定位和申請硬件資源，創(chuàng)建內核對象
* 參數(shù)列表:
pDriverObject:從I/O管理器中傳進來的驅動對象
pRegistryPath:驅動程序在注冊表的中的路徑
* 返回 值:返回初始化驅動狀態(tài)
*************************************************************************/
#pragma INITCODE
extern "C" NTSTATUS DriverEntry (
IN PDRIVER_OBJECT pDriverObject,
IN PUNICODE_STRING pRegistryPath )
{
NTSTATUS status;
KdPrint(("Enter DriverEntry\n"));
//注冊其他驅動調用函數(shù)入口
pDriverObject->DriverUnload = HelloDDKUnload;
pDriverObject->MajorFunction[IRP_MJ_CREATE] = HelloDDKDispatchRoutine;
pDriverObject->MajorFunction[IRP_MJ_CLOSE] = HelloDDKDispatchRoutine;
pDriverObject->MajorFunction[IRP_MJ_WRITE] = HelloDDKDispatchRoutine;
pDriverObject->MajorFunction[IRP_MJ_READ] = HelloDDKDispatchRoutine;
//創(chuàng)建驅動設備對象
status = CreateDevice(pDriverObject);
StringTest();
KdPrint(("DriverEntry end\n"));
return status;
}
/************************************************************************
* 函數(shù)名稱:CreateDevice
* 功能描述:初始化設備對象
* 參數(shù)列表:
pDriverObject:從I/O管理器中傳進來的驅動對象
* 返回 值:返回初始化狀態(tài)
*************************************************************************/
#pragma INITCODE
NTSTATUS CreateDevice (
IN PDRIVER_OBJECT pDriverObject)
{
NTSTATUS status;
PDEVICE_OBJECT pDevObj;
PDEVICE_EXTENSION pDevExt;
//創(chuàng)建設備名稱
UNICODE_STRING devName;
RtlInitUnicodeString(&devName,L"\\Device\\MyDDKDevice");
//創(chuàng)建設備
status = IoCreateDevice( pDriverObject,
sizeof(DEVICE_EXTENSION),
&(UNICODE_STRING)devName,
FILE_DEVICE_UNKNOWN,
0, TRUE,
&pDevObj );
if (!NT_SUCCESS(status))
return status;
pDevObj->Flags |= DO_BUFFERED_IO;
pDevExt = (PDEVICE_EXTENSION)pDevObj->DeviceExtension;
pDevExt->pDevice = pDevObj;
pDevExt->ustrDeviceName = devName;
//創(chuàng)建符號鏈接
UNICODE_STRING symLinkName;
RtlInitUnicodeString(&symLinkName,L"\\??\\HelloDDK");
pDevExt->ustrSymLinkName = symLinkName;
status = IoCreateSymbolicLink( &symLinkName,&devName );
if (!NT_SUCCESS(status))
{
IoDeleteDevice( pDevObj );
return status;
}
return STATUS_SUCCESS;
}
/************************************************************************
* 函數(shù)名稱:HelloDDKUnload
* 功能描述:負責驅動程序的卸載操作
* 參數(shù)列表:
pDriverObject:驅動對象
* 返回 值:返回狀態(tài)
*************************************************************************/
#pragma PAGEDCODE
VOID HelloDDKUnload (IN PDRIVER_OBJECT pDriverObject)
{
PDEVICE_OBJECT pNextObj;
KdPrint(("Enter DriverUnload\n"));
pNextObj = pDriverObject->DeviceObject;
while (pNextObj != NULL)
{
PDEVICE_EXTENSION pDevExt = (PDEVICE_EXTENSION)
pNextObj->DeviceExtension;
//刪除符號鏈接
UNICODE_STRING pLinkName = pDevExt->ustrSymLinkName;
IoDeleteSymbolicLink(&pLinkName);
pNextObj = pNextObj->NextDevice;
IoDeleteDevice( pDevExt->pDevice );
}
}
/************************************************************************
* 函數(shù)名稱:HelloDDKDispatchRoutine
* 功能描述:對讀IRP進行處理
* 參數(shù)列表:
pDevObj:功能設備對象
pIrp:從IO請求包
* 返回 值:返回狀態(tài)
*************************************************************************/
#pragma PAGEDCODE
NTSTATUS HelloDDKDispatchRoutine(IN PDEVICE_OBJECT pDevObj,
IN PIRP pIrp)
{
KdPrint(("Enter HelloDDKDispatchRoutine\n"));
NTSTATUS status = STATUS_SUCCESS;
// 完成IRP
pIrp->IoStatus.Status = status;
pIrp->IoStatus.Information = 0; // bytes xfered
IoCompleteRequest( pIrp, IO_NO_INCREMENT );
KdPrint(("Leave HelloDDKDispatchRoutine\n"));
return status;
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